The replacement apart is threaded and screws into predrilled holes in the bottom of the cabinet. In order to simplify installation tip cabinet over using a two wheel cart. The predrilled holes have a tang on one side which may need adjusted. If not set properly the tang will start chewing up the threads and be difficult to screw in the feet. Use a pair of needle nose pliers and adjust as necessary. Measure length of feet protruding from cabinet after threading in and match the dimension of all feet. As long as floor is level no further adjustment will be necessary. Stand unit back up and slide into position. Check and adjust for level and you're done!